Feat/au precompile

[gitofdeepanshu]

Closes #1055

Pull Request Summary

This PR adds the Precompile for pallet-unified-account.

Precompile Architecture

the return value of the precompile functions is designed as (H160/ss58 address,bool) where bool value indicated if the mapping is default or mapped.

true indicates that the mapping exists and precompile is returning the mapped value and false indicates that mapping doesn't exists and the precompile is returning the default value for that address.

Check list

• added or updated unit tests
• updated Astar official documentation
• added OnRuntimeUpgrade hook for precompile revert code registration
• updated spec version
• updated semver

[Dinonard]

LGTM, just some minor comments in .sol file

[Dinonard]

Probably better to drop Shibuya from the comment.

And the address too, I guess. It's not tied to the interface.

[ashutoshvarma]

Yeah I'll drop Shibuya.
For address, it's kind of tied to interface as we have same address in all networks and we have this in every precompile interface, also easier for people to just use it right from here.

[Dinonard]

It's not tied to the .sol file as an interface.

It's tied to the implementation of this interface in our precompiles - there it's said to be the number mentioned above. But it could just as well change in the implementation without any change being required in the .sol file.

It's not a big deal, and you are right when you say it's also mentioned in other files.
I consider it to be wrong - however it is convenient.

No need to change it, it was more of a minor comment.

[github-actions]

Package	Line Rate	Branch Rate	Health
pallets/contracts-migration/src	0%	0%	❌
chain-extensions/types/xvm/src	0%	0%	❌
pallets/block-reward/src	85%	0%	✔
pallets/dynamic-evm-base-fee/src	81%	0%	✔
precompiles/sr25519/src	79%	0%	➖
chain-extensions/types/dapps-staking/src	0%	0%	❌
pallets/xc-asset-config/src	53%	0%	➖
precompiles/unified-accounts/src	100%	0%	✔
primitives/src/xcm	66%	0%	➖
chain-extensions/types/unified-accounts/src	0%	0%	❌
pallets/ethereum-checked/src	48%	0%	❌
pallets/xvm/src	40%	0%	❌
chain-extensions/dapps-staking/src	0%	0%	❌
pallets/dapps-staking/src	81%	0%	✔
precompiles/utils/src	55%	0%	➖
chain-extensions/unified-accounts/src	0%	0%	❌
primitives/src	65%	0%	➖
chain-extensions/xvm/src	0%	0%	❌
precompiles/utils/src/testing	38%	0%	❌
pallets/unified-accounts/src	84%	0%	✔
chain-extensions/pallet-assets/src	0%	0%	❌
pallets/dapps-staking/src/pallet	85%	0%	✔
precompiles/dapps-staking/src	93%	0%	✔
precompiles/assets-erc20/src	77%	0%	➖
pallets/collator-selection/src	69%	0%	➖
pallets/block-rewards-hybrid/src	87%	0%	✔
precompiles/utils/macro/src	0%	0%	❌
precompiles/xcm/src	75%	0%	➖
precompiles/substrate-ecdsa/src	78%	0%	➖
precompiles/xvm/src	75%	0%	➖
chain-extensions/types/assets/src	0%	0%	❌
Summary	57% (2303 / 4040)	0% (0 / 0)	➖

Minimum allowed line rate is 50%

[PierreOssun]

Great! LGTM